Disclosed is an audio coding and decoding apparatus. More specifically, the audio coding apparatus comprises: an audio signal coding par which codes an audio signalt; and a bitstream transmitting part converting the coded audio signal into a bitstream and transmitting. The audio signal comprises a channel audio signal, an object audio signal, and a reverberation signal of the object audio signal. [Reference numerals] (101) Audio coding device; (102) Audio decoding device; (AA) Channel audio signal; (BB) Object audio signal; (CC) Reverberation signal of the object audio signal; (DD) Rendering information; (EE) Bit stream; (FF) Rendered multi-channel audio signal
Description Translated from Korean ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì´ì©í ì¤ëì¤ ë¶/ë³µí¸í ì¥ì¹{AUDIO CODING/DECODING APPARATUS USING REVERBERATION SIGNAL OF OBJECT AUDIO SIGNAL}AUDIO CODING / DECODING APPARATUS USING REVERBERATION SIGNAL OF OBJECT AUDIO SIGNAL}ìëì ì¤ëª ì ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì´ì©í ì¤ëì¤ ë¶/ë³µí¸í ì¥ì¹ì ê´í ê²ì¼ë¡ ë³´ë¤ êµ¬ì²´ì ì¼ë¡ ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ í¬í¨íë ì¤ëì¤ ì í¸ë¥¼ ì´ì©íì¬ ì¤ëì¤ ë¶í¸í ëë ì¤ëì¤ ë³µí¸ííë ì¤ëì¤ ë¶/ë³µí¸í ì¥ì¹ì ê´í ê²ì´ë¤.The following description relates to an audio encoding / decoding apparatus using a reverberation signal of an object audio signal, and more particularly to an audio encoding / decoding apparatus using an audio signal including a reverberation signal of an object audio signal. will be.
ì¢ ëì ìí¥ ì¥ë©´ì 구ì±íë ë°©ë²ì ìì´ì, MPEG SAOC(Spatial Audio Object Coding)ì Dolby Atmosë ê°ê° ì ë ¥ ë°ë ì ë ¥ ì í¸ ëë ê°ì²´ë¥¼ ì´ì©íì¬ ìí¥ ì¥ë©´ì 구ì±íë¤.In the conventional method of constructing a sound scene, MPEG SOC (Spatial Audio Object Coding) and Dolby Atmos respectively construct a sound scene using an input signal or an object.
MPEG SAOCì ì ë ¥ ì¤ëì¤ ì í¸ë¥¼ ê°ì²´ë¡ ê°ì£¼íê³ , í´ë¹ ì ë ¥ ì¤ëì¤ ì í¸ë¥¼ ì ë ¥ ë°ëë¤. ê·¸ë¦¬ê³ , MPEG SAOCì ì ë ¥ëë ë ëë§ ì ë³´ì ëí´ì ìí¥ì¥ë©´ì 구ì±íë¤. í¹í, MPEG SAOCì ì ë¹í¸ì¨ë¡ ì ì¡ì´ ê°ë¥íë©°, ê³ ìì¶ ë°©ìì¼ë¡ spatial audio coding ë°©ìì ì´ì©íë¤.MPEG SAOC regards the input audio signal as an object and receives the corresponding input audio signal. The MPEG SAOC constitutes an audio scene with respect to input rendering information. In particular, MPEG SAOC can be transmitted at a low bit rate and uses spatial audio coding as a high compression method.
ê·¸ë¦¬ê³ , Dolby Atmosë ê·¹ì¥ì© ë¤ì±ë ì¤ëì¤ í¬ë§·ì¼ë¡, Bedsë¼ë ì±ë ì í¸ì objectë¼ë ê°ì²´ì í¸ë¥¼ ì ì¡ í¹ì ì ì¥íë©°, ë©íë°ì´í°ë¥¼ ì´ì©íì¬ ìí¥ ì¥ë©´ì 구ì±íë¤.In addition, Dolby Atmos is a multi-channel audio format for theater, and transmits or stores a channel signal called Beds and an object signal called object, and composes a sound scene using metadata.
ê·¸ë¬ë, ì´ë¬í ì¢ ëì ë°©ìì ì ë ¥ ì¤ëì¤ ì í¸ ëë ê°ì²´ ì í¸ë¥¼ ì´ì©íì¬ ìí¥ì¥ë©´ì 구ì±í기 ë문ì, ì ë ¥ ì¤ëì¤ ì í¸ ëë ê°ì²´ ì í¸ì ë°ë¥¸ ì½í ì¸ ì ìëì ëìíì§ ìì§ ìë ìí¥ì¥ë©´ì í¬í¨íë ê²½ì°ê° ë°ìíë¤. ì´ë ìí¥ì¥ë©´ì 구ì±í기 ìí 기본ì ì¸ ì í¸ë§ì í¬í¨íê³ ì기 ë문ì´ë¤.However, since such a conventional method configures a sound scene using an input audio signal or an object signal, a case in which a sound scene that does not correspond to the intention of the content according to the input audio signal or the object signal occurs. This is because it includes only basic signals for constructing an acoustic scene.
ë°ë¼ì, ì ë ¥ ì¤ëì¤ ì í¸ ëë ê°ì²´ ì í¸ì ë°ë¥¸ ì½í ì¸ ì ìëì ëìíì¬ ì íí ìí¥ì¥ë©´ì 구ì±í ì ìë ë°©ë²ì´ ê°êµ¬ëì´ì¼ íë¤.Therefore, a method for constructing an accurate sound scene in response to the intention of the content according to the input audio signal or the object signal should be devised.
ë¤ì±ë ì¤ëì¤ ì í¸ë¥¼ ì¬ííëë° ìì´ì, ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì´ì©í¨ì¼ë¡ì¨, ë³´ë¤ í¨ê³¼ì ì´ë©° íì¤ê° ìë ì¤ëì¤ ì í¸ë¥¼ ì¬íí ì ìë ì¤ëì¤ ë¶/ë³µí¸í ì¥ì¹ë¥¼ ì ê³µíë ê²ì´ë¤.In reproducing a multi-channel audio signal, an audio encoding / decoding device capable of reproducing a more effective and realistic audio signal by using a reverberation signal of a channel audio signal, an object audio signal, and an object audio signal is provided.
ê°ì²´ ì¤ëì¤ ì í¸ì í´ë¹ ê°ì²´ ì¤ëì¤ ì í¸ì ëìíë ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ë ëë§í¨ì¼ë¡ì¨, ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ì ë°ë¥¸ ì¤ê°ëë ìí¥ ì¥ë©´ì ì¬êµ¬ì±í ì ìë ë¶/ë³µí¸í ì¥ì¹ë¥¼ ì ê³µíë ê²ì´ë¤.By providing a reverberation signal of an object audio signal and an object audio signal corresponding to the object audio signal, an encoding / decoding apparatus capable of reconstructing a realistic sound scene according to the reverberation signal of the object audio signal.
ì¼ì¤ììì ë°ë¥¸ ì¤ëì¤ ë¶í¸í ì¥ì¹ë ì¤ëì¤ ì í¸ë¥¼ ë¶í¸ííë ì¤ëì¤ ì í¸ ë¶í¸íë¶; ë° ì기 ë¶í¸íë ì¤ëì¤ ì í¸ë¥¼ ë¹í¸ì¤í¸ë¦¼ì¼ë¡ ë³ííì¬ ì ì¡íë ë¹í¸ì¤í¸ë¦¼ ì ì¡ë¶ë¥¼ í¬í¨íê³ , ì기 ì¤ëì¤ ì í¸ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ í¬í¨í ì ìë¤.An audio encoding apparatus according to an embodiment includes an audio signal encoder for encoding an audio signal; And a bitstream transmitter for converting the encoded audio signal into a bitstream and transmitting the bitstream. The audio signal may include a channel audio signal, an object audio signal, and a reverberation signal of the object audio signal.
ì¼ì¤ììì ë°ë¥¸ ì¤ëì¤ ë³µí¸í ì¥ì¹ë ë¶í¸íë ì¤ëì¤ ì í¸ë¥¼ í¬í¨íë ë¹í¸ì¤í¸ë¦¼ì ìì íë ë¹í¸ì¤í¸ë¦¼ ìì ë¶; ë° ì기 ë¹í¸ì¤í¸ë¦¼ì í¬í¨ë ì¤ëì¤ ì í¸ë¥¼ ë³µí¸ííì¬ ì기 ë¹í¸ì¤í¸ë¦¼ì¼ë¡ë¶í° ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì¶ì¶íë ì¤ëì¤ ì í¸ ë³µí¸íë¶ë¥¼ í¬í¨í ì ìë¤.An audio decoding apparatus according to an embodiment includes a bitstream receiver configured to receive a bitstream including an encoded audio signal; And an audio signal decoder which decodes an audio signal included in the bitstream to extract a channel audio signal, an object audio signal, and a reverberation signal of the object audio signal from the bitstream.
ì¼ì¤ììì ë°ë¥¸ ì¤ëì¤ ë³µí¸í ì¥ì¹ë ì기 ë¹í¸ì¤í¸ë¦¼ì í¬í¨ë ë ëë§ ì ë³´ì 기ì´íì¬ ì기 ì¶ì¶ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ë ëë§íë ì¤ëì¤ ë ëë§ë¶ë¥¼ ë í¬í¨í ì ìë¤.The audio decoding apparatus may further include an audio renderer that renders the extracted channel audio signal, the object audio signal, and a reverberation signal of the object audio signal based on the rendering information included in the bitstream.
ì¼ì¤ììì ë°ë¥¸ ì¤ëì¤ ë¶í¸í ë°©ë²ì ì¤ëì¤ ì í¸ë¥¼ ë¶í¸ííë ë¨ê³; ë° ì기 ë¶í¸íë ì¤ëì¤ ì í¸ë¥¼ ë¹í¸ì¤í¸ë¦¼ì¼ë¡ ë³ííì¬ ì ì¡íë ë¨ê³ë¥¼ í¬í¨íê³ , ì기 ì¤ëì¤ ì í¸ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ í¬í¨í ì ìë¤.An audio encoding method according to an embodiment includes encoding an audio signal; And converting the encoded audio signal into a bitstream and transmitting the bitstream, wherein the audio signal may include a channel audio signal, an object audio signal, and a reverberation signal of the object audio signal.
ì¼ì¤ììì ë°ë¥¸ ì¤ëì¤ ë³µí¸í ë°©ë²ì ë¶í¸íë ì¤ëì¤ ì í¸ë¥¼ í¬í¨íë ë¹í¸ì¤í¸ë¦¼ì ìì íë ë¨ê³; ì기 ë¹í¸ì¤í¸ë¦¼ì í¬í¨ë ì¤ëì¤ ì í¸ë¥¼ ë³µí¸ííì¬ ì기 ë¹í¸ì¤í¸ë¦¼ì¼ë¡ë¶í° ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì¶ì¶íë ë¨ê³; ë° ì기 ë¹í¸ì¤í¸ë¦¼ì í¬í¨ë ë ëë§ ì ë³´ì 기ì´íì¬ ì기 ì¶ì¶ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ë ëë§íë ë¨ê³ë¥¼ í¬í¨í ì ìë¤.According to an embodiment, an audio decoding method includes: receiving a bitstream including an encoded audio signal; Decoding the audio signal included in the bitstream to extract a channel audio signal, an object audio signal, and a reverberation signal of the object audio signal from the bitstream; And rendering the extracted channel audio signal, the object audio signal, and a reverberation signal of the object audio signal based on the rendering information included in the bitstream.
ì¼ì¤ììì ë°ë¥¸ ì¤ëì¤ ë¶/ë³µí¸í ì¥ì¹ë ë¤ì±ë ì¤ëì¤ ì í¸ë¥¼ ì¬ííëë° ìì´ì, ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì´ì©í¨ì¼ë¡ì¨, ë³´ë¤ í¨ê³¼ì ì´ë©° íì¤ê° ìë ì¤ëì¤ ì í¸ë¥¼ ì¬íí ì ìë¤.In an audio encoding / decoding apparatus according to an embodiment, a reverberation signal of a channel audio signal, an object audio signal, and an object audio signal may be used to reproduce a multichannel audio signal, thereby reproducing a more effective and realistic audio signal. .
ì¼ì¤ììì ë°ë¥¸ ì¤ëì¤ ë¶/ë³µí¸í ì¥ì¹ë ê°ì²´ ì¤ëì¤ ì í¸ì í´ë¹ ê°ì²´ ì¤ëì¤ ì í¸ì ëìíë ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ë ëë§í¨ì¼ë¡ì¨, ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ì ë°ë¥¸ ì¤ê°ëë ìí¥ ì¥ë©´ì ì¬êµ¬ì±í ì ìë¤.The audio encoding / decoding apparatus according to an embodiment may reconstruct a realistic sound scene according to the reverberation signal of the object audio signal by rendering the reverberation signal of the object audio signal and the object audio signal corresponding to the object audio signal.
ë 1ì ì¼ì¤ììì ë°ë¥¸ ì¤ëì¤ ë¶/ë³µí¸í ì¥ì¹ë¥¼ ëìí ëë©´ì´ë¤.
ë 2ë ì¼ì¤ììì ë°ë¥¸ ì¤ëì¤ ë¶í¸í ì¥ì¹ë¥¼ ëìí ëë©´ì´ë¤.
ë 3ì ì¼ì¤ììì ë°ë¥¸ ì¤ëì¤ ë³µí¸í ì¥ì¹ë¥¼ ëìí ëë©´ì´ë¤.
ë 4ë ì¼ì¤ììì ë°ë¥¸ ë2ì ì¤ëì¤ ë¶í¸í ì¥ì¹ë¥¼ 구체íí ëë©´ì´ë¤.
ë 5ë ì¼ì¤ììì ë°ë¥¸ ë3ì ì¤ëì¤ ë³µí¸í ì¥ì¹ë¥¼ 구체íí ëë©´ì´ë¤.
ë 6ì ì¼ì¤ììì ë°ë¥¸ ë ëë§ ì ë³´ì 구ì±ì ëìí ëë©´ì´ë¤.
ë 7ì ì¼ì¤ììì ë°ë¥¸ ì¤ëì¤ ë¶í¸í ë°©ë²ì ëìí ëë©´ì´ë¤.
ë 8ì ì¼ì¤ììì ë°ë¥¸ ì¤ëì¤ ë³µí¸í ë°©ë²ì ëìí ëë©´ì´ë¤.1 is a diagram illustrating an audio encoding / decoding apparatus according to an embodiment.
2 is a diagram illustrating an audio encoding apparatus, according to an embodiment.
3 is a diagram illustrating an audio decoding apparatus, according to an exemplary embodiment.
4 is a diagram illustrating an example of an audio encoding apparatus of FIG. 2, according to an embodiment.
5 is a diagram illustrating an example of an audio decoding apparatus of FIG. 3, according to an exemplary embodiment.
6 is a diagram illustrating a configuration of rendering information, according to an exemplary embodiment.
7 is a diagram illustrating an audio encoding method, according to an exemplary embodiment.
8 is a diagram illustrating an audio decoding method, according to an exemplary embodiment.
ì´í, 본 ë°ëª ì ì¤ìì를 첨ë¶ë ëë©´ì 참조íì¬ ìì¸íê² ì¤ëª íë¤.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
ë 1ì ì¼ì¤ììì ë°ë¥¸ ì¤ëì¤ ë¶/ë³µí¸í ì¥ì¹ë¥¼ ëìí ëë©´ì´ë¤.1 is a diagram illustrating an audio encoding / decoding apparatus according to an embodiment.
ë 1ì ì°¸ê³ íë©´, ì¤ëì¤ ë¶í¸í ì¥ì¹(101)ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ í¬í¨íë ì¤ëì¤ ì í¸ë¥¼ ìì í ì ìë¤. ì´ ë, ì¤ëì¤ ë¶í¸í ì¥ì¹(101)ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ë¥¼ í¬í¨íì¬ ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ê°ì²´ë¡ ê°ì£¼íì¬ ì¤ëì¤ ì í¸ë¥¼ ìì í ì ìë¤. ê·¸ë¦¬ê³ , ì¤ëì¤ ë¶í¸í ì¥ì¹(101)ë ììì ì¸ê¸í 3ê°ì§ ííì ì¤ëì¤ ì í¸ë¥¼ í¬í¨íë ì¤ëì¤ ì í¸ë¥¼ ë°ëì ìì í´ì¼ íë¤.Referring to FIG. 1, the audio encoding apparatus 101 may receive an audio signal including a reverberation signal of a channel audio signal, an object audio signal, and an object audio signal. In this case, the audio encoding apparatus 101 may receive an audio signal by considering a reverberation signal of the object audio signal as an object including a channel audio signal and an object audio signal. In addition, the audio encoding apparatus 101 must receive an audio signal including the above-mentioned three types of audio signals.
ê·¸ë¦¬ê³ , ì¤ëì¤ ë¶í¸í ì¥ì¹(101)ë ë ëë§ ì 보를 ìì í ì ìë¤. ë ëë§ ì ë³´ë ë¶ê° ë°ì´í°ë¡ì¨, ì´ëê° ê¸°ë°ì ë ëë§ ì ë³´ ë° ìê° ì§ì°ê³¼ ê´ë ¨ë ë ëë§ ì 보를 í¬í¨í ì ìë¤. ëí, ë ëë§ ì ë³´ë ì¤ëì¤ ì í¸ë¥¼ ì¶ë ¥íë ê²½ì°, ì¤ëì¤ ì í¸ì ëìíë ì¥ë©´ ì 보를 í¬í¨í ì ìë¤.The audio encoding apparatus 101 may receive rendering information. The rendering information is additional data and may include gain information-based rendering information and rendering information related to a time delay. In addition, the rendering information may include scene information corresponding to the audio signal when the audio signal is output.
ì¤ëì¤ ë¶í¸í ì¥ì¹(101)ë ìì í ì¤ëì¤ ì í¸ë¥¼ ë¶í¸í í ì ìë¤. ê·¸ë¦¬ê³ , ì¤ëì¤ ë¶í¸í ì¥ì¹(101)ë ë ëë§ ì 보를 ë¹í¸ì´ë¡ ë³íí ì ìë¤. ì¼ë¡ë¡, ì¤ëì¤ ë¶í¸í ì¥ì¹(101)ë ë°ì´ë리(Binary) ë³ííì¬ ë ëë§ ì 보를 ë¹í¸ì´ë¡ ë³íí ì ìë¤. ëí, ì¤ëì¤ ë¶í¸í ì¥ì¹(101)ë ì¤ëì¤ ì í¸ì ë ëë§ ì 보를 ëìì ë¶í¸í í ì ìë¤. ì´ ë, ì¤ëì¤ ë¶í¸í ì¥ì¹(101)ë ë ëë§ ì 보를 ë¹í¸ì´ë¡ ë³íí ì ìë ë¸ë¡ì í¬í¨í ì ìë¤.The audio encoding apparatus 101 may encode the received audio signal. The audio encoding apparatus 101 may convert the rendering information into a bit string. For example, the audio encoding apparatus 101 may convert the rendering information into a bit string by performing binary conversion. In addition, the audio encoding apparatus 101 may simultaneously encode the audio signal and the rendering information. In this case, the audio encoding apparatus 101 may include a block capable of converting rendering information into a bit string.
ê·¸ë¦¬ê³ , ì¤ëì¤ ë¶í¸í ì¥ì¹(101)ë ë¶í¸í ë ì¤ëì¤ ì í¸ë¥¼ ë¹í¸ì¤í¸ë¦¼ì¼ë¡ ë³íí ì ìë¤. ì¤ëì¤ ë¶í¸í ì¥ì¹(101)ë ë ëë§ ì 보를 ë¹í¸ì´ë¡ ë³íí ì ìë ë¸ë¡ì í¬í¨í ì ìë¤. ì¤ëì¤ ë¶í¸í ì¥ì¹(101)ë ë ëë§ ì ë³´ì ë¶í¸í ë ì¤ëì¤ ì í¸ë¥¼ ë¹í¸ì¤í¸ë¦¼ì¼ë¡ ë³íí ì ìë¤. ë¹í¸ì¤í¸ë¦¼ì ë ëë§ ì ë³´ì ë¶í¸í ë ì¤ëì¤ ì í¸ë¥¼ í¬í¨í ì ìë¤. ê·¸ë¦¬ê³ , ì¤ëì¤ ë¶í¸í ì¥ì¹(101)ë ë³íë ë¹í¸ì¤í¸ë¦¼ì ì¤ëì¤ ë³µí¸í ì¥ì¹(102)ë¡ ì ì¡í ì ìë¤.The audio encoding apparatus 101 may convert the encoded audio signal into a bitstream. The audio encoding apparatus 101 may include a block capable of converting rendering information into a bit string. The audio encoding apparatus 101 may convert the rendering information and the encoded audio signal into a bitstream. The bitstream may include rendering information and an encoded audio signal. The audio encoding apparatus 101 may transmit the converted bitstream to the audio decoding apparatus 102.
ì¤ëì¤ ë³µí¸í ì¥ì¹(102)ë ì¤ëì¤ ë¶í¸í ì¥ì¹(101)ë¡ë¶í° ë³íë ë¹í¸ì¤í¸ë¦¼ì ìì í ì ìë¤. ê·¸ë¦¬ê³ , ì¤ëì¤ ë³µí¸í ì¥ì¹(102)ë ìì í ë¹í¸ì¤í¸ë¦¼ì í¬í¨ë ì¤ëì¤ ì í¸ë¥¼ ë³µí¸ííì¬ ë¹í¸ì¤í¸ë¦¼ì¼ë¡ë¶í° ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì¶ì¶í ì ìë¤. ê·¸ë¦¬ê³ , ì¤ëì¤ ë³µí¸í ì¥ì¹(102)ë ë¹í¸ì¤í¸ë¦¼ì í¬í¨ë ë ëë§ ì ë³´ì 기ì´íì¬ ì기 ì¶ì¶ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ë ëë§í ì ìë¤. ì¤ëì¤ ë³µí¸í ì¥ì¹(102)ë ë ëë§ ë ë¤ì±ëì ì¤ëì¤ ì í¸ë¥¼ ì¶ë ¥í ì ìë¤.The audio decoding apparatus 102 may receive the converted bitstream from the audio encoding apparatus 101. The audio decoding apparatus 102 may decode the audio signal included in the received bitstream to extract a channel audio signal, an object audio signal, and a reverberation signal of the object audio signal from the bitstream. The audio decoding apparatus 102 may render the extracted channel audio signal, the object audio signal, and the reverberation signal of the object audio signal based on the rendering information included in the bitstream. The audio decoding apparatus 102 may output the rendered multi-channel audio signal.
ë 2ë ì¼ì¤ììì ë°ë¥¸ ì¤ëì¤ ë¶í¸í ì¥ì¹ë¥¼ ëìí ëë©´ì´ë¤.2 is a diagram illustrating an audio encoding apparatus, according to an embodiment.
ë 2를 ì°¸ê³ íë©´, ì¤ëì¤ ë¶í¸í ì¥ì¹(201)ì ì¤ëì¤ ì í¸ ë¶í¸íë¶(202), ë¹í¸ì¤í¸ë¦¼ ì ì¡ë¶(203)ì í¬í¨í ì ìë¤.Referring to FIG. 2, the audio encoding apparatus 201 may include an audio signal encoder 202 and a bitstream transmitter 203.
ì¤ëì¤ ì í¸ ë¶í¸íë¶(202)ë ì¤ëì¤ ì í¸ë¥¼ ë¶í¸íí ì ìë¤. ì¤ëì¤ ì í¸ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ í¬í¨í ì ìë¤.The audio signal encoder 202 may encode an audio signal. The audio signal may include a channel audio signal, an object audio signal, and a reverberation signal of the object audio signal.
ì±ë ì¤ëì¤ ì í¸ë ì¼ë°ì ì¼ë¡ ì¬ì©ëë ì±ë ì¤ëì¤ ì í¸ë¡ ì¬ì ì ììì ì¬ì ì¥ì¹ì ì±ëë¡ í ë¹ëë ì í¸ì¼ ì ìë¤. ì¬ê¸°ì, ì±ë ì¤ëì¤ ì í¸ë ë ëë§ ì ë³´ì ìí´ì ê°ë³ëì§ ìë ì í¸ì¼ ì ìë¤. ê·¸ë¦¬ê³ , ì±ë ì¤ëì¤ ì í¸ë Nê°ì ì±ë ì¤ëì¤ ì í¸ì ëí´ì ë¤ìê³¼ ê°ì ìíì 1ì ì´ì©íì¬ vector ì´ë¡ ì 리í ì ìë¤.The channel audio signal may be a signal that is allocated to a channel of any playback device during reproduction as a channel audio signal that is generally used. Here, the channel audio signal may be a signal which is not changed by the rendering information. In addition, the channel audio signal may be arranged into a vector column for N channel audio signals by using Equation 1 below.
ê°ì²´ ì¤ëì¤ ì í¸ë ë³µìì ì¤ëì¤ ì í¸ ì¤ í¹ì ì¤ëì¤ ì í¸ë¥¼ ê°ì²´ ì¤ëì¤ ì í¸ë¡ ì ìíì¬ ë ëë§ì ìííë ì£¼ì²´ë¡ íì©í ì ìë¤. ì¬ê¸°ì, ê°ì²´ ì¤ëì¤ ì í¸ë ì¬ì ì¥ì¹ì 기íí ìì¹ í´ìì ê±°ì³ ììì ì§ì ì ì ìë ì ìë ì í¸ì¼ ì ìë¤. ê°ì²´ ì¤ëì¤ ì í¸ë Mê°ì ê°ì²´ ì¤ëì¤ ì í¸ì ëíì¬ ë¤ìê³¼ ê°ì ìíì 2를 ì´ì©íì¬ vertorì´ë¡ 구ì±ë íë ¬ë¡ ííí ì ìë¤.The object audio signal may be used as a subject that performs rendering by defining a specific audio signal among a plurality of audio signals as the object audio signal. Here, the object audio signal may be a signal that can be defined at any point through the geometric position analysis of the playback device. The object audio signal may be expressed as a matrix composed of vertor columns for M object audio signals using Equation 2 below.
ì´ ë, ìíì 2ë ê°ì²´ ì¤ëì¤ ì í¸ì ìì¹ ì ë³´ì ê°ì²´ ì¤ëì¤ ì í¸ì ì§ì° ì ë³´ì ëíì¬ ë 립ì ì¼ë¡ ë ëë§ì ìíí ë, ì¬ì©í ì ìë¤.In this case, Equation 2 may be used when independently rendering the positional information of the object audio signal and the delay information of the object audio signal.
ê°ì²´ ì¤ëì¤ ì í¸ê° íë ¬ë¡ ííë ì ìë ì´ì ë ê°ê°ì ê°ì²´ ì¤ëì¤ ì í¸ë ì¬ë¬ ê°ì ì±ë ì¤ëì¤ ì í¸ë¡ 구ì±ë ì ì기 ë문ì´ë¤. ì¼ë¡ë¡, ê°ì²´ ì¤ëì¤ ì í¸ë 첫 ë²ì§¸ ê°ì²´ ì¤ëì¤ ì í¸
ê° ì¤í ë ì¤ë¡ 구ì±ëì´ ìë¤ë©´, ìíì 3ì ê°ì´ ííí ì ìë¤.The object audio signal can be represented by a matrix because each object audio signal can be composed of multiple channel audio signals. In one example, the object audio signal is the first object audio signal If is composed of a stereo, it can be expressed as Equation 3.ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë ê°ì²´ ì¤ëì¤ ì í¸ì ì ì©ëë ìí¥ ì í¸ë¡ì¨, ê°ì²´ ì¤ëì¤ ì í¸ì ìì¥ê°ì ííí ì ìë¤. ê·¸ë¦¬ê³ , ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë ê°ì²´ ì¤ëì¤ ì í¸ì ëìíë ì í¸ë¡ Mê°ì ê°ì²´ ì¤ëì¤ ì í¸ì ëí ìí¥ ì í¸ë¥¼ í¬í¨í ì ìë¤. ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë ìíì 4ì ê³¼ ê°ì´ ííí ì ìë¤.The reverberation signal of the object audio signal is a reverberation signal applied to the object audio signal and may express a sound field of the object audio signal. The reverberation signal of the object audio signal may correspond to the object audio signal and may include reverberation signals for the M object audio signals. The reverberation signal of the object audio signal may be expressed as shown in Equation 4.
ëí, ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë ê°ì²´ ì¤ëì¤ ì í¸ì ëì¼íê² ì¬ë¬ ê°ì ì±ë ì¤ëì¤ ì í¸ë¡ 구ì±ë ì ìë¤. ì¼ë¡ë¡, ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë 5.1ì 5ì±ëë¡ êµ¬ì±ë ê²½ì°, ìíì 5ì ê°ì´ ííí ì ìë¤.In addition, the reverberation signal of the object audio signal may be composed of a plurality of channel audio signals in the same manner as the object audio signal. For example, the reverberation signal of the object audio signal may be expressed as shown in Equation 5 when configured as five channels of 5.1.
ì¬ê¸°ì, ì¤ëì¤ ì í¸ ë¶í¸íë¶(202)ë ê°ì²´ ì¤ëì¤ ì í¸ì ëíì¬ ë¤ìí ë ì´ììì ê°ë ìí¥ ì í¸ë¥¼ í¬í¨íì¬, ì¤ëì¤ ì í¸ë¥¼ ë¶í¸íí ì ìë¤.Here, the audio signal encoder 202 may encode an audio signal by including a reverberation signal having various layouts with respect to the object audio signal.
ë¹í¸ì¤í¸ë¦¼ ì ì¡ë¶(203)ë ë¶í¸íë ì¤ëì¤ ì í¸ë¥¼ ë¹í¸ì¤í¸ë¦¼ì¼ë¡ ë³íí ì ìë¤. ë¹í¸ì¤í¸ë¦¼ ì ì¡ë¶(203)ë ì기 ë¶í¸íë ì¤ëì¤ ì í¸ ë° ì기 ì¤ëì¤ ì í¸ì ì¶ë ¥ì ìí ë ëë§ ì 보를 ë¹í¸ì¤í¸ë¦¼ì¼ë¡ ìì±í ì ìë¤. ë ëë§ ì ë³´ë ì¤ëì¤ ì í¸ì ëí ë¶ê° ë°ì´í°ì¼ ì ìë¤. ë¤ì ë§í´, ë ëë§ ì ë³´ë ì¤ëì¤ ì í¸ì ì ì©ëì´ ìí¥ê³¼ ê´ë ¨ë ì¥ë©´ ì 보를 ì¬ìí ì ìë ì ë³´ì¼ ì ìë¤. ë ëë§ ì ë³´ë ì¤ëì¤ ê°ì²´ì ìì¹ ì ë³´, ì¤ëì¤ ê°ì²´ì ìì ì ë³´ ë° ì¤ëì¤ ê°ì²´ì ì§ì° ì ë³´ ì¤ ì ì´ë íë를 í¬í¨í ì ìë¤. ë ëë§ ì ë³´ë ìíì 6ê³¼ ê°ì´ ííí ì ìë¤.The bitstream transmitter 203 may convert the encoded audio signal into a bitstream. The bitstream transmitter 203 may generate the encoded audio signal and rendering information for outputting the audio signal into a bitstream. The rendering information may be additional data for the audio signal. In other words, the rendering information may be information that is applied to an audio signal to reproduce scene information related to sound. The rendering information may include at least one of position information of the audio object, sound pressure information of the audio object, and delay information of the audio object. The rendering information may be expressed as in Equation 6.
R(t)ë ê°ì²´ ì¤ëì¤ ì í¸ì ìì¹ ì ë³´ì´ë©°, Gi(t)ë ê°ì²´ ì¤ëì¤ ì í¸ì ììì¼ ì ìë¤. ê·¸ë¦¬ê³ , D(t)ë ê°ì²´ ì¤ëì¤ ì í¸ì ì§ì°ì ëíë¼ ì ìë¤. G1(t)ê³¼ G2(t)ë ìì í ê°ì²´ ì¤ëì¤ ì í¸ì ëíì¬ ìì ì¡°ì ì ìí ì¤ì¼ì¼ íë ¬ ì¼ ì ìë¤. ê·¸ë¦¬ê³ , të ìê°ì ëí ì¸ë±ì¤ì¼ ì ìë¤.R (t) may be position information of the object audio signal, and Gi (t) may be sound pressure of the object audio signal. D (t) may represent a delay of the object audio signal. G1 (t) and G2 (t) may be scale matrices for adjusting sound pressure on the received object audio signal. And t may be an index over time.
ì´ ë, ê°ì²´ ì¤ëì¤ ì í¸ì ìì¹ ì ë³´ì ê°ì²´ ì¤ëì¤ ì í¸ì ì§ì° ì 보를 ëìì ë ëë§ì ìíí ê²½ì°, ìíì 7ê³¼ ê°ì´ ííí ì ìë¤.At this time, when rendering the positional information of the object audio signal and the delay information of the object audio signal at the same time, it can be expressed as in Equation (7).
ê·¸ë¦¬ê³ , ë¹í¸ì¤í¸ë¦¼ ì ì¡ë¶(203)ë ë³íë ë¹í¸ì¤í¸ë¦¼ì ì¤ëì¤ ë³µí¸í ì¥ì¹ë¡ ì ì¡í ì ìë¤.The bitstream transmitter 203 may transmit the converted bitstream to the audio decoding apparatus.
3ì ì¼ì¤ììì ë°ë¥¸ ì¤ëì¤ ë³µí¸í ì¥ì¹ë¥¼ ëìí ëë©´ì´ë¤.3 is a diagram illustrating an audio decoding apparatus according to an embodiment.
ë 3ì ì°¸ê³ íë©´, ì¤ëì¤ ë³µí¸í ì¥ì¹(301)ë ë¹í¸ì¤í¸ë¦¼ ìì ë¶(302), ì¤ëì¤ ì í¸ ë³µí¸íë¶(303), ì¤ëì¤ ë ëë§ë¶(304)를 í¬í¨í ì ìë¤.Referring to FIG. 3, the audio decoding apparatus 301 may include a bitstream receiver 302, an audio signal decoder 303, and an audio renderer 304.
ë¹í¸ì¤í¸ë¦¼ ìì ë¶(302)ë ì¤ëì¤ ë¶í¸í ì¥ì¹ë¡ë¶í° ë¶í¸íë ì¤ëì¤ ì í¸ë¥¼ í¬í¨íë ë¹í¸ì¤í¸ë¦¼ì ìì í ì ìë¤.The bitstream receiver 302 may receive a bitstream including an encoded audio signal from an audio encoding apparatus.
ì¤ëì¤ ì í¸ ë³µí¸íë¶(303)ë ë¹í¸ì¤í¸ë¦¼ì í¬í¨ë ì¤ëì¤ ì í¸ë¥¼ ë³µí¸í í ì ìë¤. 구체ì ì¼ë¡ ì¤ëì¤ ì í¸ ë³µí¸íë¶(303)ë ë¹í¸ì¤í¸ë¦¼ì¼ë¡ë¶í° ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì¶ì¶í ì ìë¤. ì¼ë¡ë¡, ì¤ëì¤ ì í¸ ë³µí¸íë¶(303)ë ì¶ì¶ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ì ëìíì¬ ìíì 8, ìíì 9, ìíì 10ì ê°ì´ ííë ì ìë¤.The audio signal decoder 303 may decode the audio signal included in the bitstream. In detail, the audio signal decoder 303 may extract the reverberation signal of the channel audio signal, the object audio signal, and the object audio signal from the bitstream. For example, the audio signal decoder 303 may be expressed as Equation 8, Equation 9, or Equation 10 corresponding to the extracted channel audio signal, the object audio signal, and the reverberation signal of the object audio signal.
ì¤ëì¤ ë ëë§ë¶(304)ë ë¹í¸ì¤í¸ë¦¼ì í¬í¨ë ë ëë§ ì ë³´ì 기ì´íì¬ ì기 ì¶ì¶ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ë ëë§í ì ìë¤. ëí, ì¤ëì¤ ë ëë§ë¶(304)ë ë ëë§ ì ë³´ì ìí¥ê³¼ ê´ë ¨ë ì¥ë©´ì ë³´ì 기ì´íì¬ ìí¥ì¥ë©´ì 구ì±í ì ìë¤.The audio renderer 304 may render a reverberation signal of the extracted channel audio signal, the object audio signal, and the object audio signal based on the rendering information included in the bitstream. In addition, the audio renderer 304 may configure an acoustic scene based on scene information related to the sound of the rendering information.
구체ì ì¼ë¡, ì¤ëì¤ ë ëë§ë¶(304)ë ì¤ëì¤ ì í¸ë¥¼ ë ëë§íë ëì ì리를 ìíì 11ê³¼ ê°ì´ ííí ì ìë¤.In detail, the audio rendering unit 304 may express an operation principle of rendering an audio signal as shown in Equation 11 below.
ìíì 11ìì 첫 ë²ì§¸ íì´ ì ì©ëë ê³¼ì ì ì´í´ë³´ë©´, ê°ì²´ ì¤ëì¤ ì í¸ë ììì´ ì¡°ì ë ì ìë¤. ê°ì²´ ì¤ëì¤ ì í¸ì ììì´ ì¡°ì ëë ê³¼ì ì ìíì 12ê³¼ ê°ì´ ííë ì ìë¤.Looking at the process of applying the first term in Equation 11, the sound pressure of the object audio signal may be adjusted. The process of adjusting the sound pressure of the object audio signal may be expressed by Equation 12.
ììì´ ì¡°ì ë
ë ìì ì ì íë ¬ P(t)ì ìíì¬ ì¤ì ì ì¼ë¡ ì¶ë ¥ëë ì¬ì ì¥ì¹ì ì¤í¼ì»¤ ìì¹ì í ë¹ë ì ìë¤. ê·¸ë¦¬ê³ , ìì ì ì íë ¬ P(t)ì ììë ììì ì´ë ê°ì¼ë¡ ííë ì ìë¤. ì¬ê¸°ì, ì´ë ê°ì 0ìì 1ì¬ì´ì ì¤ì ê°ì í¬í¨í ì ìë¤. ê·¸ë¦¬ê³ , ì¶ë ¥í ì ìë ì±ëì ìê° Nì¸ ê²½ì°, ë ìíì 13ì ê°ì ìì ì ì íë ¬ì´ ì ì©ë ì ìë¤.Sound pressure May be assigned to the speaker position of the reproduction device which is actually output by the image positioning matrix P (t). In addition, the elements of the negative positioning matrix P (t) may be expressed as gain values of sound pressure. Here, the gain value may include a real value between 0 and 1. If the number of channels that can be output is N, A negative stereotactic matrix as shown in Equation 13 may be applied.ìíì 13ìì ê°ì²´ ì¤ëì¤ ì í¸ë ê°ì²´ ì¤ëì¤ ì í¸
Jê°ì layoutì¼ë¡ 구ì±ëì´ ìë ê²½ì°, ìíì 14ê³¼ ê°ì´ ííë ì ìë¤.In Equation 13, the object audio signal is an object audio signal. When composed of J layouts, it may be expressed as in Equation 14.ê·¸ë¦¬ê³ , ìì ì ì íë ¬ì ìíì 15를 ì´ì©íì¬ ìì ì ì íë ¬ì ìì ë³ë¡ ì°ì° ê³¼ì ì íì¸í ì ìë¤.In addition, in the negative stereotactic matrix, the calculation process may be confirmed for each element of the negative stereographic matrix using Equation 15.
ë°ë¼ì, ìì ì ì íë ¬ P(t)ì ìí´ ì¶ë ¥ëë ì í¸ë ìíì 16ì ê°ì´ ííí ì ìë¤.Therefore, the signal output by the negative stereotactic matrix P (t) can be expressed as in Equation (16).
ê·¸ë¦¬ê³ , ìíì 10ìì ë ë²ì§¸ íì ëì¼í dimensionì íë ¬ ì°ì°ì ìíí ì ìë¤. ê·¸ë¦¬ê³ , dimensionì íë ¬ ì°ì°ì ìíì 17ê³¼ ê°ì´ ííë ì ìë¤.In addition, in Equation 10, the second term may perform matrix operation having the same dimension. In addition, the matrix operation of the dimension may be expressed as in Equation 17.
ëí, ìíì 17ìì ê°ì²´ ì¤ëì¤ ì í¸ë ê°ì²´ ì¤ëì¤ ì í¸
Jê°ì layoutì¼ë¡ 구ì±ëì´ ìë ê²½ì°, ìíì 18ê³¼ ê°ì´ ííë ì ìë¤.Further, in Equation 17, the object audio signal is an object audio signal. When composed of J layouts, it may be expressed as in Equation 18.ì¬ê¸°ì, ê°ì²´ ì¤ëì¤ ì í¸ì ì§ì° ì°ì° ê³¼ì ì ìì ì ì íë ¬ ì ì© ì°ì°ê³¼ ê°ì´ íë ¬ ê³±ì ì¼ë¡ ííë ì ìì´ì ì°ì°ì
를 íì©íì¬ ííí ì ìë¤. ê·¸ë¦¬ê³ , ì§ì° ì°ì° íë ¬ D(t)ì ìí´ì ì¶ë ¥ëë ì í¸ë ìíì 19ê³¼ ê°ì´ ííí ì ìë¤.In this case, the delay operation process of the object audio signal can not be expressed by matrix multiplication, as is the operation of the application of the stereotactic matrix. Can be expressed using. The signal output by the delay arithmetic matrix D (t) can be expressed by Equation 19.ì¤ëì¤ ë ëë§ë¶(304)ë ìì ì ì íë ¬ê³¼ ì§ì° ì°ì° íë ¬ì´ ë 립ì ì¼ë¡ ë ëë§ ê³¼ì ì ì ì©í ì ìë¤. ê·¸ë¦¬ê³ , ì¤ëì¤ ë ëë§ë¶(304)ë ìì ì ì íë ¬ê³¼ ì§ì° ì°ì° íë ¬ì ëìì ì ì©íë ê²½ì°, ìíì 20ì ì´ì©íì¬ PD(t) íë ¬ì ííí ì ìë¤.The audio renderer 304 may apply the stereotactic matrix and the delay calculation matrix independently to the rendering process. The audio renderer 304 may express the PD (t) matrix by using Equation 20 when the audio stereotactic matrix and the delayed operation matrix are simultaneously applied.
ì¤ëì¤ ë ëë§ë¶(304)ë ìíì 20ì ì°ì° ê³¼ì ì íµí´ ìíì 21ê³¼ ê°ì 결과를 ì¶ì¶í ì ìë¤.The audio rendering unit 304 may extract a result as shown in Equation 21 through a calculation process as shown in Equation 20.
ì¤ëì¤ ë ëë§ë¶(304)ë ììì ì¸ê¸í ìíìì ì´ì©íì¬ ê°ì²´ ì¤ëì¤ ì í¸ë¥¼ ì¶ë ¥í ì ìë ì±ë ì í¸ë¡ í ë¹í ì ìë¤. ê·¸ë¦¬ê³ , ì¤ëì¤ ë ëë§ë¶(304)ë í ë¹ë ê°ì²´ ì¤ëì¤ ì í¸ë¥¼ ë³µí¸í ë ì±ë ì¤ëì¤ ì í¸ì ì·¨í©í ì ìë¤. ê·¸ë¦¬ê³ , ì¤ëì¤ ë ëë§ë¶(304)ë ìµì¢ ì ì¼ë¡ ì¶ë ¥í ì ìë ì¶ë ¥ ì í¸ë¥¼ ìì±í ì ìë¤.The audio renderer 304 may allocate a channel signal capable of outputting the object audio signal using the above-described equation. The audio renderer 304 may collect the allocated object audio signal with the decoded channel audio signal. The audio renderer 304 may generate an output signal that can be finally output.
ê·¸ë¦¬ê³ , ì¤ëì¤ ë ëë§ë¶(304)ë ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ìíì 22 ëë ìíì 23ì ê°ì ê³¼ì ì íµí´ ë ëë§í ì ìë¤.In addition, the audio rendering unit 304 may render the reverberation signal of the object audio signal through a process such as Equation 22 or Equation 23.
ìíì 22ê³¼ ìíì 23ì ì´ì©í ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ì ë ëë§ ê³¼ì ì ê°ì²´ ì¤ëì¤ ì í¸ë¥¼ ë ëë§í ì ìì¼ë©°, ê°ì²´ ì¤ëì¤ ì í¸ì ëìíë ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ë ëë§í¨ì¼ë¡ì¨, ë³´ë¤ íì¤ê° ëì ìí¥ ì¥ë©´ì ì°ì¶í ì ìë¤.The rendering process on the reverberation signal of the object audio signal using Equation 22 and Equation 23 may render the object audio signal and render a reverberation signal of the object audio signal corresponding to the object audio signal, thereby producing a more realistic sound scene. I can produce it.
ëí, ì¤ëì¤ ë ëë§ë¶(304)ë ì기 ê°ì²´ ì¤ëì¤ ì í¸ë¥¼ ì ì´íë ê²½ì°, í´ë¹ ê°ì²´ ì¤ëì¤ ì í¸ì ëìíë ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì ì´í ì ìë¤. ì¼ë¡ë¡, ì¤ëì¤ ë ëë§ë¶(304)ë ê°ì²´ ì¤ëì¤ ì í¸
를 ë ëë§íë ê³¼ì ìì ì ê³ íê³ ì í ë, ìíì 11ì ì´ë ê°ìì ì ê°ì´ ê°ì í´ë¥¼ í ë¹í ì ìë¤. ê·¸ë¦¬ê³ , ì¤ëì¤ ë ëë§ë¶(304)ë ìíì 11ì ì ëì¼íê² ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ê°ì²´ ì¤ëì¤ ì í¸ì ì¸ë±ì¤ì ëìíì¬ ì ì´í ì ìë¤. ëí, ì¤ëì¤ ë ëë§ë¶(304)ë ìíì 22ì ì´ë ê°ìì ì ê°ì´ ê°ì í´ë¥¼ í ë¹íê±°ë, ìíì 23ìì ì ê°ì´ ê°ì²´ ì¤ëì¤ ì í¸ë¥¼ ì ì´í ì ìë¤.In addition, when controlling the object audio signal, the audio renderer 304 may control a reverberation signal of the object audio signal corresponding to the object audio signal. In one example, the audio rendering unit 304 is an object audio signal In the process of rendering the equation, the gain value You can assign a solution of values as And, the audio rendering unit 304 is Similarly, the reverberation signal of the object audio signal may be controlled corresponding to the index of the object audio signal. In addition, the audio rendering unit 304 at the gain value of Equation 22 Assign a solution of the value, or It can control the object audio signal as shown.ê·¸ë¦¬ê³ , ìµì¢ ì ì¼ë¡ ì¶ë ¥í ì ìë ì¶ë ¥ ì í¸ë ë ëë§ ë ê°ì²´ ì¤ëì¤ ì í¸, ë ëë§ ë ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ ë° ë³µí¸í ë ì±ë ì¤ëì¤ ì í¸ê° íµí©ë ì í¸ì¼ ì ìë¤. ê·¸ë¦¬ê³ , ì¶ë ¥ ì í¸ë ìíì 24ê³¼ ê°ì´ ííë ì ìë¤.The output signal that can be finally output may be a signal in which the rendered object audio signal, the reverberation signal of the rendered object audio signal, and the decoded channel audio signal are integrated. The output signal may be expressed as in Equation (24).
ìíì 24ììë
ì ë¡ êµ¬ë¶í ì ìë¤. ë¤ì ë§í´, ì¶ë ¥ ì í¸ë ë ëë§ ë ê°ì²´ ì¤ëì¤ ì í¸ì ì ë³´ì ë ëë§ ë ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ì ì 보를 ìë¡ ë¤ë¥¸ ë°©ìì íµí´ ì ì¡ë ì ìë¤. ë°ë¼ì, ìíì 23ììë ê°ê°ì ë ëë§ ì ë³´ë¡ì¨ ì ë¡ ì ì¡ëì´ì¼ íë¤ê³ ëª ìíê³ ìë¤.In equation (24) Wow Can be divided into In other words, the output signal may transmit information of the rendered object audio signal and information of the reverberation signal of the rendered object audio signal through different methods. Therefore, Equation 23 specifies that each of the rendering information should be transmitted to and.ê·¸ë¦¬ê³ , ìíì 23ìì ë³µí¸í ë ì±ë ì¤ëì¤ ì í¸ë¥¼
ë¡ í기í ê²ì ìµì¢ ì ì¸ ì¶ë ¥í ì ìë ì±ëì ìì ë³µí¸í ë ì±ë ì¤ëì¤ ì í¸ê° ë¤ë¥¼ ê²½ì°, ë³µí¸í ë ì±ë ì¤ëì¤ ì í¸ ê° ë¤ì´ ë¯¹ì¤ ë ííì ì í¸ë¡ ííí기 ë문ì´ë¤. ì¼ë¡ë¡, ë³µí¸í ë ì±ë ì¤ëì¤ ì í¸ë Nê°ìì¼ë, ì ì ìí´ ì¶ë ¥ëë ì¶ë ¥ ì í¸ì ì±ëì ì를 Kê°ë¡ íë¤ë©´, ë¤ì´ ë¯¹ì¤ íë ¬ì íµí´ ë ë¡ ë³íí ì ìë¤. ë¤ì ë§í´, ì ì ì´ íë ¬ì ì°¨ì ìë Kê°ê° ë ì ìë¤.The channel audio signal decoded in Equation 23 is obtained. Decoded channel audio signal indicates that the number of final output channels is different from the decoded channel audio signal. Because it is expressed as a downmixed signal. In one example, there were N decoded channel audio signals, Wow If you set the number of output signals and channels to be K, Degree . ≪ / RTI > In other words, Wow The number of dimensions of the column matrix of may be K.ì¬ê¸°ì, ë¤ì´ ë¯¹ì¤ íë ¬ì ìíì 25ì ê°ì´ ííë ì ìë¤.Here, the downmix matrix may be expressed as in Equation 25.
ê·¸ë¦¬ê³ , ìíì 25를 기ì´íì¬ ë³µí¸í ë ì±ë ì¤ëì¤ ì í¸ê° Nê°, ì¶ë ¥ ì í¸ê° Kê°ì¼ ëì ë¤ì´ ë¯¹ì¤ ê³¼ì ì ìíì 26ì ê°ì´ ííë ì ìë¤.The downmix process when N channel audio signals and K output signals are decoded based on Equation 25 may be expressed as Equation 26.
ì´ ë, ë³µí¸í ë ì±ë ì¤ëì¤ ì í¸ê°
ì ì ì´íë ¬ì ì°¨ììë Nì¸ ê²½ì°, ì¶ë ¥ ì í¸ë ìíì 23ì ìíì 24ì ë°ìí¨ì¼ë¡ì¨, ìíì 27ê³¼ ê°ì´ ííë ì ìë¤.At this time, the decoded channel audio signal Wow When the number of dimensions of the column matrix is also N, the output signal may be expressed by Equation 27 by reflecting Equation 24 in Equation 23.ë¤ì ë§í´, ì¶ë ¥ ì í¸ë Nê°ì ì±ë ì¤ëì¤ ì í¸ì ëí ë ëë§ì ìíí í, DMX(t)를 ì ì©íì¬ ë¤ì´ 믹ì¤ë¥¼ ìíí ì ìë¤. ëí, ìê° ì¸ë±ì¤ të DMX(t)ì ì ë³´ì ìê°ì ë°ë¼ ë³íë ì ìë¤.In other words, the output signal may perform rendering on N channel audio signals and then perform downmixing by applying DMX (t). In addition, the time index t may change with time of the information of the DMX (t).
ì¤ëì¤ ë¶í¸í ì¥ì¹(101) ë° ì¤ëì¤ ë³µí¸í ì¥ì¹(102)ë ê°ì²´ ì¤ëì¤ ì í¸ì ëìíë ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì´ì©í¨ì¼ë¡ì¨, ì ìí¥ ìì§ëì´ì ì½í ì¸ ìì± ì ì ìë를 ì¶©ë¶í ë°ìí ì ìë¤. ê·¸ë¦¬ê³ , ì¤ëì¤ ë¶í¸í ì¥ì¹(101) ë° ì¤ëì¤ ë³µí¸í ì¥ì¹(102)ë ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì ì´í ì ìë¤. ë°ë¼ì, ì¤ëì¤ ë¶í¸í ì¥ì¹(101) ë° ì¤ëì¤ ë³µí¸í ì¥ì¹(102)ë ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì¶ê°ì ì¼ë¡ ì ì´í기 ìíì¬ ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ì í´ë¹íë ë ëë§ ì 보를 í¬í¨í ì ìë¤.The audio encoding apparatus 101 and the audio decoding apparatus 102 can sufficiently reflect the original sound engineer's intention of creating content by using the reverberation signal of the object audio signal corresponding to the object audio signal. The audio encoding apparatus 101 and the audio decoding apparatus 102 may control the reverberation signal of the object audio signal. Accordingly, the audio encoding apparatus 101 and the audio decoding apparatus 102 may include rendering information corresponding to the reverberation signal of the object audio signal in order to further control the reverberation signal of the object audio signal.
ë 4ë ì¼ì¤ììì ë°ë¥¸ ë2ì ì¤ëì¤ ë¶í¸í ì¥ì¹ë¥¼ 구체íí ëë©´ì´ë¤.4 is a diagram illustrating an example of an audio encoding apparatus of FIG. 2, according to an embodiment.
ë 4를 ì°¸ê³ íë©´, ì¤ëì¤ ë¶í¸í ì¥ì¹ë ì¤ëì¤ ì í¸ ë¶í¸íë¶(401), ë¹í¸ì¤í¸ë¦¼ ì ì¡ë¶(402)를 í¬í¨í ì ìë¤.Referring to FIG. 4, the audio encoding apparatus may include an audio signal encoder 401 and a bitstream transmitter 402.
ì¤ëì¤ ì í¸ ë¶í¸íë¶(401)ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ìì í ì ìë¤. ì´ ë, ì¤ëì¤ ì í¸ ë¶í¸íë¶(401)ë ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ìì í¨ì¼ë¡ì¨, ë³´ë¤ ëì ìí¥ ì¥ë©´ì ì°ì¶í ì ìë¤. ê·¸ë¦¬ê³ , ì¤ëì¤ ì í¸ ë¶í¸íë¶(401)ë ìì í ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì¤ëì¤ ì í¸ë¡ ë¶í¸í í ì ìë¤.The audio signal encoder 401 may receive a reverberation signal of a channel audio signal, an object audio signal, and an object audio signal. In this case, the audio signal encoder 401 may produce a higher sound scene by receiving a reverberation signal of the object audio signal. The audio signal encoder 401 may encode the received reverberation signal of the channel audio signal, the object audio signal, and the object audio signal into an audio signal.
ê·¸ë¦¬ê³ , ì¤ëì¤ ë¶í¸í ì¥ì¹ë ë ëë§ ì ë³´(403)를 ìì í ì ìë¤. ê·¸ë¦¬ê³ , ì¤ëì¤ ë¶í¸í ì¥ì¹ë ë ëë§ ì ë³´(403)를 ë°ì´ëë¦¬ë¡ ë³íí ì ìë ë¸ë¡ì í¬í¨í ì ìë¤.The audio encoding apparatus may receive rendering information 403. The audio encoding apparatus may include a block capable of converting the rendering information 403 into binary.
ì´ ë, ì¤ëì¤ ì í¸ ë¶í¸íë¶(401)ê° ë ëë§ ì ë³´(403)를 ë³íí ì ìë ë¸ë¡ì í¬í¨íë ê²½ì°, ì¤ëì¤ ì í¸ ë¶í¸íë¶(401)ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ ë° ë ëë§ ì ë³´(403)를 í¬í¨íë ì¤ëì¤ ì í¸ë¡ ë¶í¸íí ì ìë¤.In this case, when the audio signal encoder 401 includes a block capable of converting the rendering information 403, the audio signal encoder 401 may include a channel audio signal, an object audio signal, and a reverberation signal of the object audio signal. It may be encoded into an audio signal including the rendering information 403.
ë¹í¸ì¤í¸ë¦¼ ì ì¡ë¶(402)ë ë¶í¸í ë ì¤ëì¤ ì í¸ë¥¼ ë¹í¸ì¤í¸ë¦¼ì¼ë¡ ë³íí ì ìë¤. ë¹í¸ì¤í¸ë¦¼ ì ì¡ë¶(402)ë ë³íë ë¹í¸ì¤í¸ë¦¼ì ì¤ëì¤ ë³µí¸í ì¥ì¹ë¡ ì ì¡í ì ìë¤. ì´ ë, ë¹í¸ì¤í¸ë¦¼ì ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ í¬í¨íë ì¤ëì¤ ì í¸ ë° ë ëë§ ì ë³´(403)를 í¬í¨í ì ìë¤. ê·¸ë¦¬ê³ , ë¹í¸ì¤í¸ë¦¼ ì ì¡ë¶(402)ë ë¤ì±ë ì¥ë©´ ì 보를 ìì±ì ìí´ ë¹í¸ì¤í¸ë¦¼ì ì ì¡í ì ìë¤. ë¤ì±ë ì¥ë©´ ì ë³´ì ë ëë§ ì ë³´(403)를 기ì´íì¬ ìì±í ì ìë¤. ê·¸ë¦¬ê³ , ë ëë§ ì ë³´(403)ë ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ì ëí ë¶ê° ë°ì´í°ë¡ ì¬ì©ë ì ìë¤.The bitstream transmitter 402 may convert the encoded audio signal into a bitstream. The bitstream transmitter 402 may transmit the converted bitstream to the audio decoding apparatus. In this case, the bitstream may include a channel audio signal, an object audio signal, an audio signal including a reverberation signal of the object audio signal, and rendering information 403. The bitstream transmitter 402 may transmit a bitstream to generate multi-channel scene information. The multi-channel scene information may be generated based on the rendering information 403. The rendering information 403 may be used as additional data for the reverberation signal of the object audio signal.
ë 5ë ì¼ì¤ììì ë°ë¥¸ ë3ì ì¤ëì¤ ë³µí¸í ì¥ì¹ë¥¼ 구체íí ëë©´ì´ë¤.5 is a diagram illustrating an example of an audio decoding apparatus of FIG. 3, according to an exemplary embodiment.
ì¤ëì¤ ë³µí¸í ì¥ì¹ë ë¹í¸ì¤í¸ë¦¼ ìì ë¶(501), ì¤ëì¤ ì í¸ ë³µí¸íë¶(502), ì¤ëì¤ ë ëë§ë¶(503)ì í¬í¨í ì ìë¤.The audio decoding apparatus may include a bitstream receiver 501, an audio signal decoder 502, and an audio renderer 503.
ë¹í¸ì¤í¸ë¦¼ ìì ë¶(501)ë ì¤ëì¤ ë¶í¸í ì¥ì¹ë¡ë¶í° ë¹í¸ì¤í¸ë¦¼ì ìì í ì ìë¤. ìì í ë¹í¸ì¤í¸ë¦¼ì ì¤ëì¤ ì í¸ ë° ë ëë§ ì 보를 í¬í¨í ì ìë¤.The bitstream receiver 501 may receive a bitstream from an audio encoding apparatus. The received bitstream may include an audio signal and rendering information.
ì¤ëì¤ ì í¸ ë³µí¸íë¶(502)ë ì¤ëì¤ ì í¸ë¥¼ ë³µí¸í í ì ìë¤. ë¤ì ë§í´, ì¤ëì¤ ì í¸ ë³µí¸íë¶(502)ë ì¤ëì¤ ì í¸ì í¬í¨ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì¶ì¶í ì ìë¤.The audio signal decoder 502 may decode the audio signal. In other words, the audio signal decoder 502 may extract a reverberation signal of a channel audio signal, an object audio signal, and an object audio signal included in the audio signal.
ì¤ëì¤ ë ëë§ë¶(503)ë ë³µí¸í ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ë ëë§í ì ìë¤. ê°ì²´ ì¤ëì¤ ì í¸ë ë 3ì ë ëë§ ê³¼ì ì 기ì´íì¬ ë ëë§ ë ì ìë¤. ê·¸ë¦¬ê³ , ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë ê°ì²´ ì¤ëì¤ ì í¸ê° ë ëë§ ëë ê²½ì°, í´ë¹ ê°ì²´ ì¤ëì¤ ì í¸ì ì¸ë±ì¤ì ë°ë¼ ë ëë§ ë ì ìë¤. ê·¸ë¦¬ê³ , ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë ê°ì²´ ì¤ëì¤ ì í¸ê° ì ì´ë¨ì ë°ë¼ ëì¼íê² ì ì´ë¨ì¼ë¡ì¨, ë³´ë¤ íì¤ì ì¸ ìí¥ ììì ì ê³µí ì ìë¤.The audio rendering unit 503 may render the decoded channel audio signal, the object audio signal, and the reverberation signal of the object audio signal. The object audio signal may be rendered based on the rendering process of FIG. 3. The reverberation signal of the object audio signal may be rendered according to the index of the object audio signal when the object audio signal is rendered. The reverberation signal of the object audio signal may be controlled in the same manner as the object audio signal is controlled, thereby providing a more realistic sound image.
ì¤ëì¤ ë ëë§ë¶(503)ë ë³µí¸í ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ë ëë§í¨ì¼ë¡ì¨, ì¶ë ¥ ì í¸ë¥¼ ìì±í ì ìë¤. ì´ ë, ì¶ë ¥ ì í¸ë ë ëë§ ë ê°ì²´ ì¤ëì¤ ì í¸, ë ëë§ ë ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ ë° ë³µí¸í ë ì±ë ì¤ëì¤ ì í¸ë¥¼ í¬í¨í ì ìë¤. ê·¸ë¦¬ê³ , ì¶ë ¥ ì í¸ë ë¤ì±ëì ì¤ëì¤ ì í¸ë¡ ê°ê°ì ì±ëì ì¶ë ¥ë ì ìë¤.The audio rendering unit 503 may generate an output signal by rendering the decoded channel audio signal, the object audio signal, and the reverberation signal of the object audio signal. In this case, the output signal may include a rendered object audio signal, a reverberation signal of the rendered object audio signal, and a decoded channel audio signal. The output signal may be output to each channel as a multi-channel audio signal.
ë 6ì ì¼ì¤ììì ë°ë¥¸ ë ëë§ ì ë³´ì 구ì±ì ëìí ëë©´ì´ë¤.6 is a diagram illustrating a configuration of rendering information, according to an exemplary embodiment.
ë 6ì ì°¸ê³ íë©´, ë ëë§ ì ë³´(600)ë íë ¬(Matrix) ííë¡ ííë ì ìë¤. ì´ ë, ë ëë§ ì ë³´(600)ì ê°ê°ì íë ¬ì ë ëë§ ì 보를 ííí기 ìí´ ëì¹ ê°ì¼ë¡ ííë ì ìë¤. ì¼ë¡ë¡, ê°ì²´ì ìì¹ ì ë³´ë ìíë©´ê³¼ ìì§ë©´ì ê°ëë¡ ííë ì ìë¤. ê·¸ë¦¬ê³ , ì§ì° ì ë³´ì ê´ë ¨ë íë ¬ ê°ê³¼ ì´ë ê°ì 거리ê°ì ëíë´ë ê°ì¼ë¡ ëì¹ë ì ìë¤. ëí, ë ëë§ ì ë³´(600)ë ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ì ë¶ê° ë°ì´í°ë¡ ì¬ì©ë기 ìí´ ì ë ¥ëë ë¤ìí ííì ë ëë§ ì ë³´(600)ì ëìíì¬ ë ëë§ ë ê°ì²´ ì¤ëì¤ ì í¸ì ë ëë§ ë ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ì ì ì©ë ì ìëë¡ íë ¬ì ê°ì¼ë¡ ë³íëì´ ííëì´ì¼ íë¤.Referring to FIG. 6, the rendering information 600 may be represented in a matrix form. In this case, each matrix of the rendering information 600 may be represented by a substitute value to represent the rendering information. In one example, the location information of the object may be represented by the angle between the horizontal plane and the vertical plane. In addition, the matrix value and the gain value related to the delay information may be replaced with a value indicating a sense of distance. Also, the rendering information 600 may be applied to the rendered object audio signal and the reverberation signal of the rendered object audio signal corresponding to various types of rendering information 600 input to be used as additional data of the reverberation signal of the object audio signal. So that it can be converted into a matrix value and represented.
ë 7ì ì¼ì¤ììì ë°ë¥¸ ì¤ëì¤ ë¶í¸í ë°©ë²ì ëìí ëë©´ì´ë¤.7 is a diagram illustrating an audio encoding method, according to an exemplary embodiment.
ë¨ê³(701)ìì ì¤ëì¤ ë¶í¸í ì¥ì¹ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ìì í ì ìë¤. ì±ë ì¤ëì¤ ì í¸ë ì¼ë°ì ì¼ë¡ ì¬ì©ëë ì±ë ì¤ëì¤ ì í¸ë¡ ì¬ì ì ììì ì¬ì ì¥ì¹ì ì±ëë¡ í ë¹ëë ì í¸ì¼ ì ìë¤. ê°ì²´ ì¤ëì¤ ì í¸ë ë³µìì ì¤ëì¤ ì í¸ ì¤ í¹ì ì¤ëì¤ ì í¸ë¥¼ ê°ì²´ ì¤ëì¤ ì í¸ë¡ ì ìíì¬ ë ëë§ì ìííë ì£¼ì²´ë¡ íì©í ì ìë¤. ê·¸ë¦¬ê³ , ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë ê°ì²´ ì¤ëì¤ ì í¸ì ì ì©ëë ìí¥ ì í¸ë¡ì¨, ê°ì²´ ì¤ëì¤ ì í¸ì ìì¥ê°ì ííí ì ìë¤.In operation 701, the audio encoding apparatus may receive a reverberation signal of a channel audio signal, an object audio signal, and an object audio signal. The channel audio signal may be a signal that is allocated to a channel of any playback device during reproduction as a channel audio signal that is generally used. The object audio signal may be used as a subject that performs rendering by defining a specific audio signal among a plurality of audio signals as the object audio signal. The reverberation signal of the object audio signal is a reverberation signal applied to the object audio signal, and may represent a sound field of the object audio signal.
ëí, ì¤ëì¤ ë¶í¸í ì¥ì¹ë ììí ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ í¬í¨íë ì¤ëì¤ ì í¸ë¡ ë¶í¸í í ì ìë¤.The audio encoding apparatus may encode the audio signal including the reverberation signal of the channel audio signal, the object audio signal, and the object audio signal.
ë¨ê³(702)ìì ì¤ëì¤ ë¶í¸í ì¥ì¹ë ë¶í¸í ë ì¤ëì¤ ì í¸ë¥¼ ë¹í¸ì¤í¸ë¦¼ì¼ë¡ ë³íí ì ìë¤. ì´ ë, ë¹í¸ì¤í¸ë¦¼ì ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ í¬í¨íë ì¤ëì¤ ì í¸ ë° ë ëë§ ì ë³´(403)를 í¬í¨í ì ìë¤. ì¤ëì¤ ë¶í¸í ì¥ì¹ë ë¤ì±ë ì¥ë©´ ì 보를 ìì±ì ìí´ ë¹í¸ì¤í¸ë¦¼ì ì ì¡í ì ìë¤.In operation 702, the audio encoding apparatus may convert the encoded audio signal into a bitstream. In this case, the bitstream may include a channel audio signal, an object audio signal, an audio signal including a reverberation signal of the object audio signal, and rendering information 403. The audio encoding apparatus may transmit a bitstream to generate multichannel scene information.
ë 8ì ì¼ì¤ììì ë°ë¥¸ ì¤ëì¤ ë³µí¸í ë°©ë²ì ëìí ëë©´ì´ë¤.8 is a diagram illustrating an audio decoding method, according to an exemplary embodiment.
ë¨ê³(801)ìì ì¤ëì¤ ë³µí¸í ì¥ì¹ë ì¤ëì¤ ë¶í¸í ì¥ì¹ë¡ë¶í° ë¹í¸ì¤í¸ë¦¼ì ìì í ì ìë¤. ìì í ë¹í¸ì¤í¸ë¦¼ì ì¤ëì¤ ì í¸ ë° ë ëë§ ì 보를 í¬í¨í ì ìë¤.In operation 801, the audio decoding apparatus may receive a bitstream from the audio encoding apparatus. The received bitstream may include an audio signal and rendering information.
ë¨ê³(802)ìì ì¤ëì¤ ë³µí¸í ì¥ì¹ë ì¤ëì¤ ì í¸ë¥¼ ë³µí¸ííì¬ ì¤ëì¤ ì í¸ì í¬í¨ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì¶ì¶í ì ìë¤.In operation 802, the audio decoding apparatus may decode the audio signal to extract a reverberation signal of the channel audio signal, the object audio signal, and the object audio signal included in the audio signal.
ë¨ê³(803)ìì ì¤ëì¤ ë³µí¸í ì¥ì¹ë ì¤ëì¤ ë³µí¸í ì¥ì¹ë ë¹í¸ì¤í¸ë¦¼ì í¬í¨ë ë ëë§ ì ë³´ì 기ì´íì¬ ì기 ì¶ì¶ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ë ëë§í ì ìë¤. ì¤ëì¤ ë³µí¸í ì¥ì¹ë ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë ê°ì²´ ì¤ëì¤ ì í¸ê° ë ëë§ ëë ê²½ì°, í´ë¹ ê°ì²´ ì¤ëì¤ ì í¸ì ì¸ë±ì¤ì ë°ë¼ ë ëë§ ë ì ìë¤. ê·¸ë¦¬ê³ , ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë ê°ì²´ ì¤ëì¤ ì í¸ê° ì ì´ë¨ì ë°ë¼ ëì¼íê² ì ì´ë¨ì¼ë¡ì¨, ë³´ë¤ íì¤ì ì¸ ìí¥ ììì ì ê³µí ì ìë¤. ëí, ì¤ëì¤ ë³µí¸í ì¥ì¹ë ë³µí¸í ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ë ëë§í¨ì¼ë¡ì¨, ì¶ë ¥ ì í¸ë¥¼ ìì±í ì ìë¤.In operation 803, the audio decoding apparatus may render the extracted channel audio signal, the object audio signal, and a reverberation signal of the object audio signal based on the rendering information included in the bitstream. The audio decoding apparatus may render the reverberation signal of the object audio signal according to the index of the object audio signal when the object audio signal is rendered. The reverberation signal of the object audio signal may be controlled in the same manner as the object audio signal is controlled, thereby providing a more realistic sound image. The audio decoding apparatus may generate an output signal by rendering the decoded channel audio signal, the object audio signal, and the reverberation signal of the object audio signal.
본 ë°ëª ì ì¤ì ìì ë°ë¥¸ ë°©ë²ë¤ì ë¤ìí ì»´í¨í° ìë¨ì íµíì¬ ìíë ì ìë íë¡ê·¸ë¨ ëª ë ¹ ííë¡ êµ¬íëì´ ì»´í¨í° íë ê°ë¥ 매체ì 기ë¡ë ì ìë¤. ì기 ì»´í¨í° íë ê°ë¥ 매체ë íë¡ê·¸ë¨ ëª ë ¹, ë°ì´í° íì¼, ë°ì´í° 구조 ë±ì ë¨ë ì¼ë¡ ëë ì¡°í©íì¬ í¬í¨í ì ìë¤. ì기 매체ì 기ë¡ëë íë¡ê·¸ë¨ ëª ë ¹ì 본 ë°ëª ì ìíì¬ í¹ë³í ì¤ê³ëê³ êµ¬ì±ë ê²ë¤ì´ê±°ë ì»´í¨í° ìíí¸ì¨ì´ ë¹ì ììê² ê³µì§ëì´ ì¬ì© ê°ë¥í ê²ì¼ ìë ìë¤.The methods according to embodiments of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software.
ì´ìê³¼ ê°ì´ 본 ë°ëª ì ë¹ë¡ íì ë ì¤ììì ëë©´ì ìí´ ì¤ëª ëìì¼ë, 본 ë°ëª ì ì기ì ì¤ììì íì ëë ê²ì ìëë©°, 본 ë°ëª ì´ ìíë ë¶ì¼ìì íµìì ì§ìì ê°ì§ ìë¼ë©´ ì´ë¬í 기ì¬ë¡ë¶í° ë¤ìí ìì ë° ë³íì´ ê°ë¥íë¤.As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.
ê·¸ë¬ë¯ë¡, 본 ë°ëª ì ë²ìë ì¤ëª ë ì¤ììì êµíëì´ ì í´ì ¸ìë ìë ëë©°, íì íë í¹íì²êµ¬ë²ìë¿ ìëë¼ ì´ í¹íì²êµ¬ë²ìì ê· ë±í ê²ë¤ì ìí´ ì í´ì ¸ì¼ íë¤.Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.
101: ì¤ëì¤ ë¶í¸í ì¥ì¹
102: ì¤ëì¤ ë³´ê³ í ì¥ì¹101: audio encoding device
102: audio reporting device
ì¤ëì¤ ì í¸ë¥¼ ë¶í¸ííë ì¤ëì¤ ì í¸ ë¶í¸íë¶; ë°
ì기 ë¶í¸íë ì¤ëì¤ ì í¸ë¥¼ ë¹í¸ì¤í¸ë¦¼ì¼ë¡ ë³ííì¬ ì ì¡íë ë¹í¸ì¤í¸ë¦¼ ì ì¡ë¶
를 í¬í¨íê³ ,
ì기 ì¤ëì¤ ì í¸ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ í¬í¨íë ì¤ëì¤ ë¶í¸í ì¥ì¹.An audio signal encoder for encoding an audio signal; And
A bitstream transmitter for converting the encoded audio signal into a bitstream and transmitting the bitstream
Lt; / RTI >
The audio signal includes a channel audio signal, an object audio signal and a reverberation signal of the object audio signal. ì 1íì ìì´ì,
ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë,
ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìì¥ê°ì íííë ì¤ëì¤ ë¶í¸í ì¥ì¹.The method of claim 1,
The reverberation signal of the object audio signal is
And an audio encoding device for expressing a sound field of the object audio signal. ì 1íì ìì´ì,
ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë,
ë³µì ê°ì ì±ë ì í¸ë¡ 구ì±ëë ì¤ëì¤ ë¶í¸í ì¥ì¹.The method of claim 1,
The reverberation signal of the object audio signal is
An audio encoding device comprising a plurality of channel signals. ì 1íì ìì´ì,
ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë,
ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ëí´ ë¤ìí ë ì´ììì ì ê³µíë ì¤ëì¤ ë¶í¸í ì¥ì¹.The method of claim 1,
The reverberation signal of the object audio signal is
And an audio encoding device providing various layouts for the object audio signal. ì 1íì ìì´ì,
ì기 ë¹í¸ì¤í¸ë¦¼ì,
ì기 ì¤ëì¤ ì í¸ì ëí ìí¥ ì¥ë©´ ì 보를 ëíë´ë ë ëë§ ì 보를 ë í¬í¨íë ì¤ëì¤ ë¶í¸í ì¥ì¹.The method of claim 1,
The bitstream may include:
And encoding information representing sound scene information of the audio signal. ì 5íì ìì´ì,
ì기 ë¹í¸ì¤í¸ë¦¼ ì ì¡ë¶ë,
ì기 ë¶í¸íë ì¤ëì¤ ì í¸ ë° ì기 ì¤ëì¤ ì í¸ì ì¬ìì ìí ë ëë§ ì 보를 ë¹í¸ì¤í¸ë¦¼ì¼ë¡ ìì±íë ì¤ëì¤ ë¶í¸í ì¥ì¹.6. The method of claim 5,
The bitstream transmission unit,
The audio encoding apparatus for generating the encoded audio signal and the rendering information for reproduction of the audio signal in a bitstream. ì 5íì ìì´ì,
ì기 ë ëë§ ì ë³´ë,
ì¤ëì¤ ê°ì²´ì ìì¹ ì ë³´, ì¤ëì¤ ê°ì²´ì ìì ì ë³´ ë° ì¤ëì¤ ê°ì²´ì ì§ì° ì ë³´ ì¤ ì ì´ë íë를 í¬í¨íë ì¤ëì¤ ë¶í¸í ì¥ì¹.6. The method of claim 5,
The rendering information includes:
And at least one of position information of the audio object, sound pressure information of the audio object, and delay information of the audio object. ë¶í¸íë ì¤ëì¤ ì í¸ë¥¼ í¬í¨íë ë¹í¸ì¤í¸ë¦¼ì ìì íë ë¹í¸ì¤í¸ë¦¼ ìì ë¶; ë°
ì기 ë¹í¸ì¤í¸ë¦¼ì í¬í¨ë ì¤ëì¤ ì í¸ë¥¼ ë³µí¸ííì¬ ì기 ë¹í¸ì¤í¸ë¦¼ì¼ë¡ë¶í° ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì¶ì¶íë ì¤ëì¤ ì í¸ ë³µí¸íë¶
를 í¬í¨íë ì¤ëì¤ ì í¸ ë³µí¸í ì¥ì¹.A bitstream receiver configured to receive a bitstream including an encoded audio signal; And
An audio signal decoder for decoding an audio signal included in the bitstream to extract a channel audio signal, an object audio signal, and a reverberation signal of the object audio signal from the bitstream.
Audio signal decoding apparatus comprising a. ì 8íì ìì´ì,
ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë,
ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìì¥ê°ì íííë ì¤ëì¤ ë³µí¸í ì¥ì¹.9. The method of claim 8,
The reverberation signal of the object audio signal is
An audio decoding device for expressing the sound field of the object audio signal. ì 8íì ìì´ì,
ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë,
ë³µì ê°ì ì±ë ì í¸ë¡ 구ì±ëë ì¤ëì¤ ë³µí¸í ì¥ì¹.9. The method of claim 8,
The reverberation signal of the object audio signal is
An audio decoding device comprising a plurality of channel signals. ì 8íì ìì´ì,
ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë
ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ëí´ ë¤ìí ë ì´ììì ì ê³µíë ì¤ëì¤ ë³µí¸í ì¥ì¹.9. The method of claim 8,
The reverberation signal of the object audio signal is
And an audio decoding device providing various layouts for the object audio signal. ì 8íì ìì´ì,
ì기 ë¹í¸ì¤í¸ë¦¼ì,
ì기 ì¤ëì¤ ì í¸ì ëí ìí¥ ì¥ë©´ ì 보를 ëíë´ë ë ëë§ ì 보를 ë í¬í¨íë ì¤ëì¤ ë³µí¸í ì¥ì¹.9. The method of claim 8,
The bitstream may include:
And decoding information representing sound scene information of the audio signal. ì 8íì ìì´ì,
ì기 ë¹í¸ì¤í¸ë¦¼ì í¬í¨ë ë ëë§ ì ë³´ì 기ì´íì¬ ì기 ì¶ì¶ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ë ëë§íë ì¤ëì¤ ë ëë§ë¶
를 ë í¬í¨íë ì¤ëì¤ ë³µí¸í ì¥ì¹.9. The method of claim 8,
An audio renderer that renders the extracted channel audio signal, the object audio signal, and a reverberation signal of the object audio signal based on the rendering information included in the bitstream.
The audio decoding apparatus further comprising: ì 13íì ìì´ì,
ì기 ë ëë§ ì ë³´ë,
ì¤ëì¤ ê°ì²´ì ìì¹ ì ë³´, ì¤ëì¤ ê°ì²´ì ìì ì ë³´ ë° ì¤ëì¤ ê°ì²´ì ì§ì° ì ë³´ ì¤ ì ì´ë íë를 í¬í¨íë ì¤ëì¤ ë³µí¸í ì¥ì¹.14. The method of claim 13,
The rendering information includes:
And at least one of position information of the audio object, sound pressure information of the audio object, and delay information of the audio object. ì 13íì ìì´ì,
ì기 ì¤ëì¤ ë ëë§ë¶ë,
ì기 ê°ì²´ ì¤ëì¤ ì í¸ë¥¼ ì ì´íë ê²½ì°, ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ëìíë ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì ì´íë ì¤ëì¤ ë³µí¸í ì¥ì¹.14. The method of claim 13,
The audio rendering unit,
And controlling the reverberation signal of the object audio signal corresponding to the object audio signal when the object audio signal is controlled. ì 13íì ìì´ì,
ì기 ì¤ëì¤ ë ëë§ë¶ë,
ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì ì´íë ê²½ì°, ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ì ëìíë ê°ì²´ ì¤ëì¤ ì í¸ì ì¸ë±ì¤ë¥¼ ê³ ë ¤íì¬ ì ì´íë ì¤ëì¤ ë³µí¸í ì¥ì¹.14. The method of claim 13,
The audio rendering unit,
And controlling the reverberation signal of the object audio signal in consideration of the index of the object audio signal corresponding to the reverberation signal of the object audio signal. ì¤ëì¤ ì í¸ë¥¼ ë¶í¸ííë ë¨ê³; ë°
ì기 ë¶í¸íë ì¤ëì¤ ì í¸ë¥¼ ë¹í¸ì¤í¸ë¦¼ì¼ë¡ ë³ííì¬ ì ì¡íë ë¨ê³
를 í¬í¨íê³ ,
ì기 ì¤ëì¤ ì í¸ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ í¬í¨íë ì¤ëì¤ ë¶í¸í ë°©ë².Encoding an audio signal; And
Converting the encoded audio signal into a bitstream and transmitting the bitstream
Lt; / RTI >
The audio signal includes a channel audio signal, an object audio signal and a reverberation signal of the object audio signal. ì 17íì ìì´ì,
ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë,
ì¬ë¬ ê°ì ì±ë ì í¸ë¡ 구ì±ëë©°, ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìì¥ê°ì íííê³ , ê°ì²´ ì¤ëì¤ ì í¸ì ëí´ ë¤ìí ë ì´ììì ì ê³µíë ì¤ëì¤ ë¶í¸í ë°©ë².18. The method of claim 17,
The reverberation signal of the object audio signal is
An audio encoding method comprising a plurality of channel signals, representing a sound field of the object audio signal, and providing various layouts for the object audio signal. ë¶í¸íë ì¤ëì¤ ì í¸ë¥¼ í¬í¨íë ë¹í¸ì¤í¸ë¦¼ì ìì íë ë¨ê³;
ì기 ë¹í¸ì¤í¸ë¦¼ì í¬í¨ë ì¤ëì¤ ì í¸ë¥¼ ë³µí¸ííì¬ ì기 ë¹í¸ì¤í¸ë¦¼ì¼ë¡ë¶í° ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ì¶ì¶íë ë¨ê³; ë°
ì기 ë¹í¸ì¤í¸ë¦¼ì í¬í¨ë ë ëë§ ì ë³´ì 기ì´íì¬ ì기 ì¶ì¶ë ì±ë ì¤ëì¤ ì í¸, ê°ì²´ ì¤ëì¤ ì í¸ ë° ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë¥¼ ë ëë§íë ë¨ê³
를 í¬í¨íë ì¤ëì¤ ì í¸ ë³µí¸í ë°©ë².Receiving a bitstream comprising an encoded audio signal;
Decoding the audio signal included in the bitstream to extract a channel audio signal, an object audio signal, and a reverberation signal of the object audio signal from the bitstream; And
Rendering the extracted channel audio signal, the object audio signal, and a reverberation signal of the object audio signal based on the rendering information included in the bitstream
Audio signal decoding method comprising a. ì 19íì ìì´ì,
ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìí¥ ì í¸ë,
ì¬ë¬ ê°ì ì±ë ì í¸ë¡ 구ì±ëë©°, ì기 ê°ì²´ ì¤ëì¤ ì í¸ì ìì¥ê°ì íííê³ , ê°ì²´ ì¤ëì¤ ì í¸ì ëí´ ë¤ìí ë ì´ììì ì ê³µíë ì¤ëì¤ ë¶í¸í ë°©ë².20. The method of claim 19,
The reverberation signal of the object audio signal is
An audio encoding method comprising a plurality of channel signals, representing a sound field of the object audio signal, and providing various layouts for the object audio signal.
Patent event code: PA01091R01D
Comment text: Patent Application
Patent event date: 20130617
2014-04-22 PG1501 Laying open of application 2018-04-17 A201 Request for examination 2018-04-17 PA0201 Request for examinationPatent event code: PA02012R01D
Patent event date: 20180417
Comment text: Request for Examination of Application
Patent event code: PA02011R01I
Patent event date: 20130617
Comment text: Patent Application
2019-11-12 E902 Notification of reason for refusal 2019-11-12 PE0902 Notice of grounds for rejectionComment text: Notification of reason for refusal
Patent event date: 20191112
Patent event code: PE09021S01D
2020-03-12 AMND Amendment 2020-07-22 E601 Decision to refuse application 2020-07-22 PE0601 Decision on rejection of patentPatent event date: 20200722
Comment text: Decision to Refuse Application
Patent event code: PE06012S01D
Patent event date: 20191112
Comment text: Notification of reason for refusal
Patent event code: PE06011S01I
2020-07-22 X091 Application refused [patent] 2020-08-24 AMND Amendment 2020-08-24 PX0901 Re-examinationPatent event code: PX09011S01I
Patent event date: 20200722
Comment text: Decision to Refuse Application
Patent event code: PX09012R01I
Patent event date: 20200312
Comment text: Amendment to Specification, etc.
2020-09-02 PX0601 Decision of rejection after re-examinationComment text: Decision to Refuse Application
Patent event code: PX06014S01D
Patent event date: 20200902
Comment text: Amendment to Specification, etc.
Patent event code: PX06012R01I
Patent event date: 20200824
Comment text: Decision to Refuse Application
Patent event code: PX06011S01I
Patent event date: 20200722
Comment text: Amendment to Specification, etc.
Patent event code: PX06012R01I
Patent event date: 20200312
Comment text: Notification of reason for refusal
Patent event code: PX06013S01I
Patent event date: 20191112
2020-09-02 X601 Decision of rejection after re-examination 2020-10-05 A107 Divisional application of patent 2020-10-05 J201 Request for trial against refusal decision 2020-10-05 PA0107 Divisional applicationComment text: Divisional Application of Patent
Patent event date: 20201005
Patent event code: PA01071R01D
2020-10-05 PJ0201 Trial against decision of rejectionPatent event date: 20201005
Comment text: Request for Trial against Decision on Refusal
Patent event code: PJ02012R01D
Patent event date: 20200902
Comment text: Decision to Refuse Application
Patent event code: PJ02011S01I
Patent event date: 20200722
Comment text: Decision to Refuse Application
Patent event code: PJ02011S01I
Appeal kind category: Appeal against decision to decline refusal
Appeal identifier: 2020101002442
Request date: 20201005
2021-05-13 J301 Trial decisionFree format text: TRIAL NUMBER: 2020101002442; TRIAL DECISION FOR APPEAL AGAINST DECISION TO DECLINE REFUSAL REQUESTED 20201005
Effective date: 20210513
2021-05-13 PJ1301 Trial decisionPatent event code: PJ13011S01D
Patent event date: 20210513
Comment text: Trial Decision on Objection to Decision on Refusal
Appeal kind category: Appeal against decision to decline refusal
Request date: 20201005
Decision date: 20210513
Appeal identifier: 2020101002442
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4